Oh, but it e ven says in the Bible that not everything is writte4n down!
End of John
Nobody is denying that.
But this is what John says in chapter 20....
John 20:30-31 Now Jesus did many other signs in the presence of the disciples, which are not written in this book; 31 but these are written so that you may believe that Jesus is the Christ, the Son of God, and that by believing you may have life in his name.
What is included in the book of John is enough for a person to come to salvation.
So, what exactly did Jesus teach that wasn't written down and how do we know what it is and how do we know that it has been handed down faithfully?
What are the proofs and where are the links to back those claims up?